Adds capability to NIOFS to copy regular files and symlink, allowing to
overwrite the destination.
### Motivation:
Per https://github.com/apple/swift-nio/issues/3403 and
https://github.com/apple/swift-nio/pull/3470 we want to add
`replaceExisting: bool` to `FileSystem.copyItem`.
### Modifications:
1. Adds `replaceExisting: bool` parameter to
`FileSystemProtocol.copyItem`.
2. Adds `replaceExisting: bool` parameter to `FileSystem.copyItem` and
implementation for regular files and symbolic links.
3. Adds tests.
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Co-authored-by: George Barnett <gbarnett@apple.com>
Add homeDirectory accessor to FileSystem
### Motivation:
Addresses #3381 by adding a `homeDirectory` property to FileSystem,
equivalent to `FileManager.default.homeDirectoryForCurrentUser`.
### Modifications:
- Added `homeDirectory` property to `FileSystemProtocol` and implemented
in `FileSystem`
- Implementation checks `HOME` environment variable first, falls back to
`USERPROFILE` on Windows, or uses `getpwuid_r(3)` on POSIX systems
- Added system call wrappers (`system_getuid`, `libc_getpwuid_r`) with
proper platform guards
- Added `FileSystemError.getpwuid_r()` error helper
### Result:
Users can now access the home directory via `FileSystem.homeDirectory`,
returning a `FilePath` asynchronously. Follows the same pattern as
`currentWorkingDirectory` and `temporaryDirectory`.
Co-authored-by: Cory Benfield <lukasa@apple.com>
Motivation:
We accidentally removed the 'NIOFileSystem' module from the
'_NIOFileSystem' product in the last release.
Modifications:
- Rename 'NIOFileSystem' and 'NIOFileSystemFoundationCompat' to 'NIOFS'
and 'NIOFSFoundationCompat'
- Add back 'NIOFileSystem' which re-exports '_NIOFileSystem' (there was
no publicly available 'NIOFileSystemFoundationCompat' module to
remove, only '_NIOFileSystemFoundationCompat').
Result:
Fewer breaks
Stepan Ulyanin
Karan Lokchandani
George Barnett